F- smaller delta H hydration value .
Delta H hydration value increases with decrease in the ionic size
enthalpy of hydration depends upon the charge density .
charge density is the ratio of charge of the ion to the volume of the ion .
Thus the ion with greater charge density will have higher change of enthalpy of hydration . and the ion with lesser charge density will have smaller enthalpy of hydration .
Th hydration energy depends upon size of the cation and charge of cation , so the higher charge of cation and lower the size of cation have higher hydration energy .
it is the change in enthalpy of 1 mole of gaseous ion dissolves in a sufficient amount of water to form infinitely dilute solution under a standard condition of 1 bar pressure .
it is type of heat energy release when new bonds are made .
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